Familiar letters on chemistry, in its relations to physiology, dietetics, agriculture, commerce, and political economy Q Science
Erkenntnistheoretische grundzüge der naturwissenschaften und ihre beziehungen zum geitesleben der gegenwart; Q Science
Appropriations expended, results reached, and present condition of the work of the Astrophysical observatory Q Science
The book of butterflies, sphinges, and moths; illustrated by one hundred and forty-four engravings, coloured after nature Q Science
A manual of spherical and practical astronomy: embracing the general problems of spherical astronomy, the special applications to nautical astronomy, and the theory and use of fixed and portable astronomical instruments Q Science
